Metallic shingle.



No. 774,740. PATENTED NOV. 15, 1904.

0. L. DARNALL. METALLIC SHINGLE.

APPLIGATIOH FILED MAY 2. 1904.

H0 MODEL.

Q vi/tweooeo I amen/07 x GMWM M Patented November 15, 1904.

PATENT ()FEICE.

CHARLES LEE DARNALL, OF FLOYD, VIRGINIA.

METALLIC SHINGLE.

SPECIFICATION forming part of Letters Patent No. 774,740, dated November15, 1904.

Application filed May 2, 1904. Serial No- 205,964. (No model.)

To all whom it may concern:

Be it known that I, CHARLES LEE DARNALL, a citizen of the United States,residing at Floyd, county of Floyd, State of Virginia, have inventedcertain new and useful Improvements in Metallic Shingles, of which thefollowing is a specification, reference being had therein to theaccompanying drawings, in which- Figure 1 is a perspective view of ashingle; Fig. 2, a detail longitudinal sectional View of the overlappingends of two shingles, and

1 Fig. 3 a transverse sectional view through the interlocked side edgesof the two shingles looking upward at the lower edge of the overlappingshingle.

The main object of this invention is to provide a shingle with awater-lock at its upper edge which will effectually prevent water beingdriven up under the ends of the shingles and with interlocking sideedges which will be substantially water-tight, whereby said shingle maybe used on roofs having a slight pitch and yet effectually preventleakage.

A further object of the invention is to provide a shingle of simpleconstruction which may be readily and cheaply manufactured.

Referring to the various parts by numerals, 1 designates the centralpanel or main portion of the shingle; 2, the overlapping side edge, and3 the underlying edge thereof; 4 and 5, the raised side flanges whichmark the central panel.

At the upper end of the shingle is formed a raised bar or flange 6,which extends entirely across the main panel of the shingle from oneside flange to the other, forming a complete dam and effectuallypreventing the upward passage of water. Slightly below this bar 6 aretwo inward extending ridges 7, whose outer ends are integral with theraised side flanges 4 and 5, their inner ends being slightly separatedto form a passage-way 8. The upper edges of these ridges taperdownwardly and inwardly, so that any water passing over them and intothe space between the bar 6 and said ridges will drain toward the centeropening 8 and thence through said opening down the shingle. Just belowthe ridges 7 is formed a ridge 9, whose ends terminate short of theflanges 4 and to form the draining-openings or passage-ways around theends ofthe ridge 9. The upper edge of this ridge 9 tapers from itscenter downward toward its'ends, so that any water draining through thepassage 8 will be carried laterally toward the side flanges 4 and 5 andthence down the shingle. It will be noted that this ridge9 forms acomplete bar, which prevents water being driven up through the passage8. It will be. readily seen that the arrangement of the bar 6 and ridges7 and 9 forms a complete water-lock and effectually prevents water beingdriven up over the top or upper edge of the shingle and yet permits anywater that may be driven up over the ridge 9 or the ridges 5 to quicklydrain back down the shingle.

The side flange 4 is formed by bending under the material of the shingleto form the receiving member 11 of the locking-flange. The portion ofthe underlying edge of the shingle which projects beyond the outer edgeof the receiving member 11 of the locking-flange is formed with aplurality of longitudinal ridges 12, which are designed to prevent waterbeing driven under the overlapping portion of the adjoining shingle andover the edge of the underlying member. Three of these ridges are shownin the drawings; but it is obvious that as many of them as may bedesired may be employed. The overlapping member of the shingle is formedwith the substantially flat portion 13, which is adapted to enter thereceiving member 11 of the interlocking flange of the adjoining shingle,the broad flange 7 being adapted-to extend over the ridges 12, as shownclearly in Fig. 3 of the drawings. It will thus be I seen that shouldany water be driven under or through the interlocking members it mustpass over the three ridges before it reaches the edge of the underlyingportion of the shingle. It will also be noted that should any moistureaccumulate in the receiving member of the interlocking flange it willdrain down onto the next shingle and will be prevented from passinginward over the side edge of the shingle.

At its lower edge the shingle is formed with the raised central portion14, which is adapted to span the interlocked side edges of the twoshingles next below, as shown in Fig. 3, and with the two depressedportions 15, one on each side of the raised central portion, which areadapted to rest on the shingles at each side of the interlocked flanges,as shown in Fig. 3. These depressed portions rest on the shingle at thepoints marked 16 in Fig. 1, just-below the water-lock. This is clearlyshown in Fig. 2. It will be readily seen by reference to this figurethat all the members of the water-lock lie under the lower end of theoverlapping shingle, so that water in order to pass up over the end ofthe shingle must first be driven under the edge of the overlappingshingle and then over the members of the water-lock. This is practicallyimpossible, so that an effectual water-lock is provided which seals theoverlapping ends of the shingles.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A metallic shingle formed with a raised longitudinal flange at eachof its side edges, one of said flanges forming the overlying member andthe other the underlying member of an interlocking flange, and awater-lock at the upper edge of the shingle, said lock being formed byan upper complete bar or dam extending entirely across the space betweenthe side flanges, two inward extending ridges which abut against theside flanges at their outer ends their inner ends being slightlyseparated to form a passage-way, and a single transverse ridge belowsaid ridges, said transverse ridge terminating short of the side 3flanges to form passage-ways between its ends and the side flanges,whereby water may drain downward through the water-lock but cannot bedriven up through it.

2. A metallic shingle formed with a raised 4 longitudinal flange at eachof its side edges, one of said flanges forming the overlying member andthe other the underlying member of an interlocking flange, and awater-lock at the upper edge of the shingle, said lock being 4 formed byan upper complete bar or dam extending entirely across the space betweenthe side flanges, two inward -eXtending ridges which abut against theside flanges at their outer ends, their inner ends being slightly 5separated to form a passge-way, and a single transverse ridge below saidridges, said transverse ridge terminating short of the side flanges toform passage-ways between its ends and the side flanges, whereby watermay drain 5 downward through the water-lock but cannot be driven upthrough it; a raised central portion at its lower edge, as 14:, and twodepressed portions, as 15, on each side of the raised central portion,substantially as described and for 6 the purpose set forth.

In testimony whereof I hereunto aflix my signature, in the presence oftwo witnesses, this 27th day of April, 190%.

CHARLES LEE DARNALL.

Witnesses:

J. E. BURWELL, P. F. HOWELL.

